{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Disease", "Chemical"], "input": "There was mutual potentiation between sub - effective doses of ketamine and morphine , but sub - effective doses of ketamine partly antagonized fully - effective doses of morphine ."}
{"Disease": [], "Chemical": ["ketamine", "morphine"]}